How to Fix or Problem Solving for Recovery SAMSUNG GALAXY CORE 2 & CORE II DUAL (SM-G355H) hang or not responding or malfunctions or stuck or freezing or bricked ?

This smartphone have 4 GB internal memory and can be add more with external memory maximum 64GB. Using 4GB internal memory basically is average amount, not to much but not to small either. By default SAMSUNG GALAXY CORE 2 & CORE II DUAL (SM-G355H) already include with Samsung applications and some other more, but like other Android smartphone, we can install more applications from Google Play Store as well. But we have to know that some applications at Google Play Store may not really compatible with our SAMSUNG GALAXY CORE 2 & CORE II DUAL (SM-G355H), then it can make our phone become trouble like hang or stuck or bricks or broken or freeze or boot loop at Samsung logo or LCD touch screen not responding. If this conditions happen to our phone, then we should try to do soft reset or do shutting-down or reboot or restart to remove temporary files or cache that can make trouble. If the problem still happen then we should have to do hard reset or master format, but we should carefully because doing hard reset will remove or wipe any important data and installed applications, therefore we suggest to do backup all data before doing hard reset.

If our SAMSUNG GALAXY CORE 2 & CORE II DUAL (SM-G355H) become trouble like stuck or bricks or freeze in the middle of running applications, then we should have to force shutdown or force soft reset or reboot or restart to clean temporary files which can cause the phone become trouble. The easy way to do soft reset can be done by unplug the battery after remove the back cover case at SAMSUNG GALAXY CORE 2 & CORE II DUAL (SM-G355H), wait about 5 seconds and we can insert again the battery at the right positions. After that we can press POWER button to turn it on again. Doing soft reset or reboot or restart will not impact anything to our important data, that’s why we can do soft reset or reboot anytime we want. At normal situations, we can doing soft reset by press and hold POWER button until the pop-up menu appear, then choose Reboot / Restart to finish the soft reset process.

Some situations can make our operating system or firmware become damage. There are no special characteristic to determine our operating system broken, but usually our SAMSUNG GALAXY CORE 2 & CORE II DUAL (SM-G355H) become act strange or can not work properly. First, we should know that the file source of clean factory default Android operating system or firmware already saved inside SAMSUNG GALAXY CORE 2 & CORE II DUAL (SM-G355H) ROM, so we do not need to copy or connect our phone to other device or gadget. The reinstall can be perform easily by doing hard reset or master format process above. Performing hard reset or master format the SAMSUNG GALAXY CORE 2 & CORE II DUAL (SM-G355H) will be reinstall clean factory default operating system automatically. All data will and all installed applications will be remove and will back to factory default Samsung Galaxy Core 2 applications.

There are some options to give more security protections at our SAMSUNG GALAXY CORE 2 & CORE II DUAL (SM-G355H), and we are recommended to use screen lock pattern which is more easy and faster to use. Some users still like to use password pin protection or any other options that also available at SAMSUNG GALAXY CORE 2 & CORE II DUAL (SM-G355H) security setting menu. The problem happen when we forget the answer of our security protections. But unfortunately Google already have some options to bypass or unlock forgot security protections by using Google account or Gmail username and password. Please try to give several time wrong answer continuously until the phone freeze for about 30 seconds, at this time we will find Forgot Password / Pattern button, press this button to unlock forgotten security protection using Gmail account that already saved inside this phone. There are also Backup PIN which is asking when the first time we give security protections, this Backup PIN at SAMSUNG GALAXY CORE 2 & CORE II DUAL (SM-G355H) will unlock the forgotten security protections as well. If we can not access the Backup PIN protection or can not connect to Google account, then we have to do hard reset or master format with hardware button.

How to Improve Performance SAMSUNG GALAXY CORE 2 & CORE II DUAL (SM-G355H) to make run more faster?

If we see the specification at SAMSUNG GALAXY CORE 2 & CORE II DUAL (SM-G355H) already use Quad Core 1.2Ghz which already fast enough to do activity. But some users maybe get trouble with the speed that their SAMSUNG GALAXY CORE 2 & CORE II DUAL (SM-G355H) become slowly. The problem usually happen because there are too many applications run in the background. The common situations, users install or download some applications from Google Play Store, some of that applications sometime will keep run in the background without any notification, because it wait for some command or need to update data from Internet. Every applications need some amount of RAM and processor resources, if there are too many applications run in the background, then it will make the resource become low and will make the phone slowdown. Please try to remove some not use applications, or we if we want to make SAMSUNG GALAXY CORE 2 & CORE II DUAL (SM-G355H) performance back to faster again like new, then we need to consider doing hard reset or master format.

How to Make SAMSUNG GALAXY CORE 2 & CORE II DUAL (SM-G355H) Battery Work More Strongger, Not Fast To Drain ?

First you have to make sure that LCD brightness is not too bright, because more bright we use at LCD, then it will consume more battery power. You may also try to disable auto brightness and set as low as possible which still fit to our situations. Especially when we want to use more longer for watch movie or playing games. We also have to disable all not use connections like GPS or Bluetooth or Wifi. SAMSUNG GALAXY CORE 2 & CORE II DUAL (SM-G355H) have GPS battery saving mode options when we want to reduce battery usage for specific applications.

Hi, it seems that you have troubles when flash your Samsung Galaxy Core 2 using Odin software. Therefore, doing hard reset with standard procedure will not work. The only solutions is trying to re-flash again using proper software, better to bring it to Samsung authorized service center for reflash using correct firmware and software.

Hi, i have puted 4gb external memory but the devicev is showing 50.64gb and sometimes 1.4 tb and the wifi and data are turning onn by itself , and 2 unknown apps got istalled which is funtioning as device administrator , which i have tried a lot to deactvate but not succeded, please tell me the reason if possible solution also, i think i have got hacked or some viruses has atacked my old phone

Hi, it seems that your phone has been compromised by viruses or malware. At this situations we suggest to do hard reset either using menu setting or using hardware button combination key like steps at #Option 2 above. Both steps will make your Samsung Galaxy Core 2 operating system reformat to factory default. As far as your phone use default official operating system or firmware, then all problems will be recover or fix after you have done hard reset or master format. But please note, all data may be wipe or removed after you finish hard reset, therefore we suggest to backup all important data to safe locations.

Hi, usually after finish doing hard reset, it will reinstall the operating system to factory default, and some problems also will be solve if it is causes by operating system. However, it you have done but the problems still happen, then please try to consult with Samsung authorized service center. Maybe the problems comes from hardware.

Hi, maybe you should try to do hard reset first using hardware button combination key to reformat your Samsung Galaxy Core 2 operating system to factory default. Hopefully your OS file source still can access while performing hard reset. If still can not work, then maybe the file source is corrupt. You have to use computer and ODIN, but this is not for everyone. You should try to ask help from Samsung authorized service center for better flash correct OS.

Hi, unfortunately we can not give good answer for rooted smartphone, because there are many non standard troubles may happen at your rooted Samsung Galaxy Core 2. Please bring your phone to Samsung authorized service center.